6517897218 has 96 divisors (see below), whose sum is σ = 17058263040. Its totient is φ = 1757052000.

The previous prime is 6517897213. The next prime is 6517897231. The reversal of 6517897218 is 8127987156.

It is not an unprimeable number, because it can be changed into a prime (6517897213) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 595471 + ... + 606317.

It is an arithmetic number, because the mean of its divisors is an integer number (177690240).

Almost surely, 2^6517897218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6517897218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8529131520).

6517897218 is an abundant number, since it is smaller than the sum of its proper divisors (10540365822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6517897218 is a wasteful number, since it uses less digits than its factorization.

6517897218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11132 (or 11129 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 54.

The square root of 6517897218 is about 80733.4950191059. The cubic root of 6517897218 is about 1867.9668693982.

The spelling of 6517897218 in words is "six billion, five hundred seventeen million, eight hundred ninety-seven thousand, two hundred eighteen".